Pump.



A. C- PAULSMEIER.

PUMP,

APPLICATION FILED OCT-11.1915. 1,259 Patented Mar. 12, 1918.

IN V ENTO R .fllberl. (Q'Paabnteien wvvvvvv I WITNESSES: OCJK%W,

UMTEE TATE$ PATENT @FFTQE.

ALBERT C. PAULSMEIER, OF ALAMEDA, CALIFORNIA, ASSIGNOR T0 BYRON JACKSON IRON WORKS, OF WEST BERKELEY, CALIFORNIA, A CORPORATION OF CALIFORNIA.

PUMP.

\ Specification of Letters Patent.

Patented Mar. raters.

Application filed October 11, 1915. Serial No. 55,206.

To all whom it may concern:

Be it known that I. ALBERT C. PAULS- arnmn, a citizen of the United States, residing at Alameda, in the county of Alameda and State of California, have invented new and useful Improvements in Pumps, of which the following is a specification.

This invention relates to deep well pumps and particularly to a novel form of drive and support for the same.

In the operation of deep well pumps of the turbine centrifugal type, it has been common practice to inclose or surround the impeller shaft and bearings, with a stationary tube in an effort to protect the shaft bearings against the entrance of water, grit, etc., but without practical success, as these substances in all instances oanreadily enter the protecting tube at least during certain periods and the purposes of the so-called protective tube are not really accomplished. in the present invention, a hollow. drive shaft is provided without the'need of any protecting outer tube, the shaft being guided on the outside only at the surface and at the extreme lower end where it enters the pump proper, no intermediate hearings or blocks being necessary. This hollow shaft and the impellers are entirely supported from the surface by a suitable roller thrust bearing, while the pump case is partly supported on an internal stationa y suspension rod, which forms an inside guide and bearing for the hollow shaft. The shaft at all times is exposed directly to and surrounded by the water in the well, yet its bearings are full protected. The hollow shaft together with the interior suspension rod may be of any length within the limits of successful wellpumping. The shaft is held in tension by its own weight and that of the impellers, as well as the water pressure on top of the im pellers. The guide rod within the shaft supports a portion of the stationary part of the whole apparatus from the surface frame, including the pump proper the weight of the column of water and the discharge pipe, the balance of the weight being taken by the discharge pipe. Ad uSting nuts are provided to give the right tension, so as to add suflicient stifiness to the rod to prevent whi ping of the surrounding hollow shaft.

The invention consists of the parts and the construction and combination of parts, as hereinafter more fully described and claimed, having reference to the accompanying drawings, in which Figure 1 is a central, vertical section of a deep well pump, showing the application of the invention.

Fig. 2 is an enlarged vertical section of the1 discharge column, pump shaft and guide r0 Fig. 3 is a cross section on line 33, Fig. 2.

Referring to the drawings in detail, A indicates the case of a deep well pump of the centrifugal or turbine type suspended from the pump head 2 by the discharge pipe or column 3; 4 is the pulley frame and 5 a hollow shaft, which carries and drives the impellers 6 in the pump case A.

This shaft is in the present instance, guided at its upper end by bearings 7 and 8, formed in the pulley frame 4 and is suspended from and supported by a roller thrust bearing 9 of suitable construction. The main length of the shaft extends through the discharge column and the lower end is journaled in bearings 10 and 10, formed in the stationary pump casing, all intermediate bearings being entirely eliminated. The lower bearing 10 of shaft 5 is arranged in the pump intake and is supported by spiders l0 from the walls of the surrounding pump case. The hollow shaft provided in the present instance, may be driven in any suitable manner and from any convenient source of power. In the present instance, I have shown a drive pulley 11 for belt drive. 1

For the purpose of supporting the weight of the pump structure, that is the pump housing and discharge column, and alsofor the purpose of providing a guide for the hollow shaft 5, a centrally disposed tensioning or suspension rod 12 is provided. This rod extends through the hollow shaft and is held in the pulley frame at its upper end by suitable means as a nut 13 and its lower end extends through the pump housing and lower spider 10 and is secured thereto by suitable means as the nut 14:. The upper nut 13 may be adjusted to give the rod suflicient tension to support the pump housing and discharge column, and also to give the rod suflicient stiffness to prevent whipping or buckling of the hollow shaft which bearing rod 12. It, therefore, tends to remain perfectly straight and will, therefore, require no intermediate bearings, as is usually employed in most forms of pumps now in use.

The guide and supporting rod may be made in sections, said sections being secured together, as indicated at 17. The hollow shaft surrounding same may also be of sectional construction, said sections being secured together by suitable means, as the couplings 18.

In actual practice, approximately onesixteenth of an inch clearance is formed between the shaft and the rod; this gives ex cellent results and also permits the admission of a lubricant through an oiling flange, indicated at 19, secured on the upper, end of the hollow shaft. The oil draining down between the rod and shaft lubricates the parts thoroughly. Bearings 10 10 are lubricated through 20, 21 connected with pipes (not shown) leading to the surface. The device as a whole, is simple in construction and easily assembled when installed.

The central rod 12 in addition to forming a support for the pump case and stationary parts of the apparatus, also constitutes a convenient and economical means for centering the shaft and the impeller or runner in the pump case without respect to the imperfections and unevennesses in the well casing or'wall or the discharge column.

Having thus described my invention, what I claim and desire to secure by Letters Patent is 1. In a ump mechanism, a pump head having a discharge opening, a discharge pipe suspended from the head and havin free and unobstructed communication wit the discharge opening thereof, a rotary pump at the lower end of the discharge pipe, a hollow shaft for driving the pump journaled in the latter and in the head and supported only at its ends whereby the discharge pipe 1s unobstructed between the pump and the discharge opening of the head, and a sta' tionary guide and supporting rod extendin entirely through the hollow shaft and fixe at one end to the pump and at its opposite end to the head, the diameter of said guide and supporting rod being substantially the same as the bore of the hollow shaft to hold the latter from bowing between its ends through centrifugal action.

2. In a dee well pump of the rotary type, a pump hea a discharge pipe depending therefrom, a pump case on the lower end of the pipe, a rotary impeller in the pump case, a hollow shaft carrying the impeller and extending upwardly through the pipe and receiving support from the head, and a sectional guide and supportin rod fixed to the head and case and exten mg through the hollow shaft, said rod being of substantially the same diameter throughout as the bore of p the hollow shaft and being composed of sections connected by a joint having a diameter the same as that of the rod whereby the hollow shaft may closely fit its guide and supporting rod through its entire length.

3. In a deep well pump, a pump-head, a superposed frame thereon, a discharge pipe depending from the head, a pump case on the lower end of the pipe, a rotary impeller in the pump case, a hollow shaft for driving the impeller extending upwardly through the pipe and pump head and supported for rotary movement by the frame, an oiling flange on the upper end of the shaft for directing an oil into the latter, and a fixed guiding and supporting rod extending through'the rod and oillng flange and secured to the frame and pump case, said rod being substantially of the same diameter as the bore of the shaft.

In testimony whereof I have hereunto set my hand in the presence of two subscribing witnesses.

B. T. HARMON, F. O. BERTELSEN. 

